One of the key issues in organizing access to the Internet in educational institution is Content Filtering. Namely, its organization.

In accordance with

Federal Law No. 436-FZ of December 29, 2010 (as amended on June 29, 2015) “On the Protection of Children from Information Harmful to Their Health and Development”

an educational institution is obliged to protect the student "from information that is harmful to their health and (or) development." These obligations were also transferred to the shoulders of the provider providing Internet connection services to an educational institution.

But as practice shows, during a prosecutor’s check, if the fact of access from the school’s local network to prohibited content is revealed, the principal of the school, and not the provider, is called to court. Thus, the task of organizing content filtering, entirely, falls on the shoulders of the IT staff of the school.

When analyzing the problem, we found out that the most effective solution to this problem is the organization of the content filtering server according to "white lists" (). But this filtering method is suitable only for students, and we also have employees - teachers, administration, tech. staff etc.

When setting up the server, we can lay down the rules for distinguishing users either by IP or by login.

Yandex.DNS:

After users are divided into access categories, you need to set up content filtering for employees. Previously, we have already configured them to access the "black lists", but constantly updating the "black lists" is a task that requires a lot of time and effort. It would be logical to automate the process. And here you can use the service Yandex.DNS.

That is, instead of adding prohibited sites to the file on our own, we will use turnkey solution. Yandex.DNS has already compiled such a list.

Yandex.DNS offers three filtering levels ():

• Base.
• Safe.
• Family.

We need the most "severe" level - Family.

Content filtering. Customization:

In order to set up content filtering via Yandex.DNS, you need to specify Yandex.DNS IP addresses as DNS servers in the network settings of the content filtering server. In our case, this 77.88.8.7 And 77.88.8.3

This function is primarily intended to restrict access to certain user groups to certain resources. Since there is no such tool in Yandex.Browser, disabling it causes some difficulties for users. In fact, turning off parental control is quite simple if you use the DNS settings.

Turn off DNS settings

Caring parents, in order to protect their child from access to certain resources, often use this method, but, as you know, the coin has two sides. Since this feature only works on the list of safe sites, you may lose access to some necessary resources that are not included in this list.

In essence, DNS servers are a kind of filters through which all search queries pass. If the site does not meet security requirements, access to its information content will not work.

The DNS server can operate in two different modes. In the first case, access is limited to resources that may be infected with virus software or to sites created for the purpose of fraud. They have addresses: 77.88.8.88 or 77.77.8.2 . In the second, content intended for adult users is blocked. Addresses: 77.88.8.7 and 77.88.8.3.

While often enabling parental controls can significantly speed up logging in to some sites, you may lose access to certain sites you need if the filter deems them insufficiently secure.

In order to disable this tool, you will need to change the router settings or directly specify other connection settings in Windows.

Method 1: Disabling DNS in different Windows OS

First of all, you need to decide which version of Windows you are using. Depending on it, the transition to the network settings will also differ.

For Windows 10, the procedure is as follows:

In Windows 7, you can enter the required section by performing the following sequence of actions:

The further description will be identical regardless of the OS version used.

Turn off DNS in the router

Parental control can also be set using the router. In this case, it will be much more difficult to disable it, since its settings also differ depending on the device model. After reading the operating instructions for the router, you will need to turn off the mode "Safe" or "Family" to restore access to all sites.

Method 2: Change search options

If certain browser settings were previously set on the computer, you can not only lose the opportunity to access a particular resource, but also stop receiving information from Yandex search results. You can disable these options as follows:

By changing the type of search filter, you will be able to get the necessary information from the search results again. Don't forget to enable cookies if you don't want the changes to return to their original state after restarting the browser.

Changing the hosts file instead of working with DNS settings

If all the changes made did not bring the desired results, and you still cannot get to the required resource, you will have to make changes to the hosts file. The filters of this system file have a much higher priority than any others, which means that if access to sites was blocked with its help, then no change in DNS will do anything.

In order to be able to edit this file, you will need to log in as an administrator, and then perform the following sequence of actions:

After doing these simple steps, you can again return access to certain content in the Yandex browser. The most difficult thing when turning off parental controls is to find out how it was previously configured, after which the solution to the problem takes only a few minutes.

We are all pleased when the browser works quickly, smoothly and immediately finds the necessary information.

That's what resources are for. What is DNS?

What are the benefits of using Yandex.DNS? Let's figure it out.

DNS - what is it?

The abbreviation DNS stands for Domain Name System, in Russian it is the Domain Name System.

Domains- these are, simply speaking, the names, or addresses, by which they differ, sites, services, users, and so on.

Each registered unit on the Internet has its own domain name.

The Domain Name System combines these addresses into a single database, which greatly speeds up the search.

The Yandex domain system has access to more than 80 DNS in various countries.

This system, when a request arrives, redirects the user to the nearest service, so that information is processed faster.

We get accelerated search and fast loading sites.

It can be compared to a lot of books neatly laid out and ordered on countless shelves, and in a whole series of rooms.

And Yandex.DNS, as an experienced custodian who knows what system everything is distributed on, therefore, with lightning speed decides which of the rooms a person needs to be directed to so that he can quickly find what he is looking for, then to which rack, row, and so on.

This, of course, is much more efficient than looking for the right book in an ordinary book pile.

Benefits of Yandex.DNS

In addition to download speed, Yandex.DNS performs protective functions. For example:

• protects against malicious codes
• protects against burglars
• protects against financial fraud
• blocks "adult" pages

Yandex.DNS has been operating since 2013. You can run this system in any of the three proposed modes. So there is:

• Basic Mode
• Safe mode
• family mode

Let's look at these points in more detail. Let's talk about modes first.

Basic Mode

By choosing this mode, you will get faster access to sites and fast page loading without any filtering.

Checking for viruses, hacking, malicious and obscene information will not be carried out.

This mode is suitable for those whose resource is already protected, but who are only interested in the speed of request processing.

If your resource still needs additional protection, select another mode.

Safe mode

In this mode, Yandex checks traffic for malicious encodings designed to extort money, hacking sites that steal passwords and codes.

If something suspicious is detected when uploading to your resource, the service blocks the dangerous site and stops loading the page.

You will receive a warning and information about exactly why the connection was interrupted.

family mode

This mode includes the functions "Safe", but in addition to protecting the system, it also protects the user's family from various obscene and immoral information.

This is especially important for those who have children. It is not so easy for children to explain which sites are useful to visit and which are not and why.

IN "Family" Yandex mode will block any content filled with information and materials of erotic and pornographic content.

Your children will not only not get to an obscene page, but they will also not see obscene advertising.

You can simply visit innocent sites for needlework, tourism, or use and pick up a viral code on your resource.

To protect the user's system from such attacks, Yandex. DNS blocks pages containing potential danger to your system and warns about the threat.

The threat of hacking

Some scammers can hack your resource and connect to it in order to access other services from it.

Such criminals create bots to steal keys, break protection, break passwords, send out malicious codes.

Bots can remain in the shadows for a long time and the owner of the resource may not know anything about the fact that his system is being brazenly used.

As you can see, the connection for Android is carried out through the Wi-Fi settings.

Similarly, the connection is carried out from other mobile systems. The differences will be only in the nuances.

Is Yandex.DNS effective?

How many people, so many opinions. Someone is delighted with the Yandex address book and speaks of it as super-fast, to someone it seems slow, oversaturated with advertising.

It is important to understand that the speed of information processing and response to requests in the network of addresses depends not only on the correct operation of the system itself that you have chosen, for example, Yandex.DNS, but also on the remoteness of this resource from you.

It is always better to use the closest possible DNS database.

If the territory in which you are located is included in the Yandex.DNS direct coverage area, then most likely the speed will please you.

Here is how one of the Yandex users suggests doing it:

Again I am glad to welcome everyone to our blog!
We continue the topic of protecting local network users from unwanted content, and today we will talk about how to set up the Yandex DNS service, which today can already be used not only on individual computers, but in most router models it is integrated directly into the firmware itself and is very easy to use. at a construction site.

What are Yandex DNS filters?

Representatives of the search service noted that there are prospects for monetization of the service, but the company has not yet made a final decision on this issue. So, if the OpenDNS platform makes money by displaying advertisements on pages with incorrect requests and with notifications about blocking a web page, then one of the ways to monetize the Yandex.DNS service can be to redirect the user from the blocked site to the Yandex start page.

How to set up Yandex DNS on a computer?

You can also block websites without a router on a separate computer or laptop. For this there is also detailed instructions for each operating system.

I will show on Windows 7. We need to go to the network settings of the adapter

Start - Networks and Internet - Network and Sharing Center - Change adapter settings - Right click on your connection - Properties - Internet protocol version 4

And in the Preferred DNS server field, enter the required address from the Yandex DNS list above.

How to install Yandex DNS servers on an Android phone?

Few people know, but enabling Yandex DNS on a phone is even easier to set up parental control than on a computer. For this you need:

• Go to "Settings" and select "Wi-Fi".
• Click on the connection that is currently active, hold until another menu appears and select the “Change network” item here.
• Check the "Advanced options" box and scroll down the window.
• Select the "DHCP" item and activate the "Static" mode.
• Next, look for the “DNS-1” item, enter the address from Yandex DNS there and save.

An example of setting up Yandex DNS on a Netis router

As an example of activating the built-in Yandex DNS filter on a router, I will show how this is done on a device from Netis, whose routers are embedded with support for this service.

To configure, go to the "Network - Yandex DNS" item.

• In the first block “Status”, the filtering mode is activated and the basic filtering mode is selected for the entire network.
• In the second "Device" you can set your type for a separate computer (by its MAC address) - a good solution, since with such a gradation of settings it is easy to isolate the parent computer or the system administrator's working machine from the total mass.

With the development of the Internet, users have an incredible number of opportunities. Now everyone can use a computer or other device with access to a network filled with diverse resources for their own purposes. The World Wide Web has given us a lot of entertainment, opportunities for finding the right information in a matter of seconds, communication, self-development, learning, earning different ways etc. And everything would be fine, but not without side effects. The Internet has also opened the way for attackers to deceive in its various manifestations. Since today access to the network is available to everyone, including children, it is worth taking care of the security of the devices from which the connection is made. There are a lot of scammers and other pests, in addition, the Internet is teeming with dangerous content and “adult” materials. Adequate parents are trying with all their might to protect their young children from such misfortunes, and everyone knows about “parental control”, designed just for such cases.

Working with Yandex DNS on different devices.

As you know, the option integrated in OS Microsoft is enough useful tool, but at the same time, all settings come down to restrictions and prohibitions on a child visiting certain resources, although modern children even manage to turn off protection, causing bewilderment of parents. A more advanced version of "parental control" is offered by Yandex. A service called Yandex DNS will protect against the influence of dangerous, virus-infected resources, protect against bots that are tools of intruders, will protect children from sites with pornographic content or other 18+ content, as well as speed up work with sites and will be useful for adult users. In this case, the user does not have to delve into the settings for a long time. Let's take a closer look at what the service is, how to set it up on different devices, and how to disable Yandex.DNS if protection is no longer required.

DNS (Domain Name System) - literally translated as a domain name system. A free service from a well-known Russian developer is an address book containing the digital addresses of all sites. When opening websites, the Internet browser finds their “place of residence” in DNS, thus, the speed of access to the resource depends on the speed of the nearest server. A tool from Yandex with the ability to select a filtering level allows you to safely visit various sites, since those that contain malicious code or unwanted content will be blocked. You can set up the service for different devices separately, as well as for the router, while protecting all devices connected to the home network.

Three Yandex.DNS operating modes are available for selection:

• Basic, providing speed and reliability (77.88.8.8 and 77.88.8.1);
• Safe, protects against scammers and virus threats (77.88.8.88 and 77.88.8.2);
• Family, protecting from materials 18+ (77.88.8.7 and 77.88.8.3).

The operation of the service is as follows:

• Increase in speed. Yandex owns more than 80 DNS servers located in Russia and abroad. Requests are processed by the server located closest to the user, so websites open much faster with the help of the Yandex.DNS service;
• Protection from sites with dangerous content. Yandex.DNS will protect against sites that can infect a device and scammers who steal money from accounts, passwords and other data. When you go to the site, the service, equipped with its own antivirus, will prevent the download and display a warning message on the screen. Antivirus operates on the basis of Yandex algorithms and Sophos technology;
• Protection against malicious bots. In addition to sites that seek to infect your computer with a virus, another threat thrives on the network - bots that, penetrating into the system of the device, control it. These programs organize networks of devices of unsuspecting users in order to attack servers, steal passwords and send spam messages. To carry out their service, bots connect to the servers that control them, while Yandex.DNS prevents communication with the controlling servers, so that even if the device is infected, the service will be able to cut off the oxygen to pests. Information about the activation of bots is shared with the service by the Virus Tracker system;
• Protection from content 18+. Yandex.DNS protects the youngest users from adult information. Thanks to Yandex search algorithms, web resources containing such content will be identified and not allowed to be viewed.

Setting up Yandex.DNS on a computer

Setting up the service is not difficult to perform and does not require special knowledge and skills from the user. Following the instructions, a beginner will cope with the task. For a computer connected to the network via Ethernet cable(twisted pair) or the only device where you need to configure, the method with changing the DNS in the network settings is suitable. On different operating systems, the actions are slightly different, but the principle is the same. Consider how to set up Yandex.DNS on a desktop computer or laptop:

• Go to the Network and Sharing Center through the Control Panel;
• In the menu on the left, find and click "Change adapter settings";
• You can also go to the settings through Start (right-click) - Network connections - Configure adapter settings;
• Depending on the type of connection to the network, on the corresponding tab (local or wireless network connection), right-click the manipulator to display the context menu, where we click "Properties";
• In the new window, select the IP protocol version 4 (TCP / IPv4) and click "Properties";
• We put a marker in the column "Use the following IP address" and enter the preferred DNS below, for example, 77.88.8. (Family mode);
• We press OK.

After these manipulations, the computer will be protected from malicious sites and adult-themed portals.

Sometimes the service overdoes it with protection, you may not be able to access those sites whose security level the filter did not consider sufficient to visit the resource. Or you decide to open access to the "strawberry", and Yandex. DNS blocks visits to such sites on the computer. You can always remove the filtering by performing the reverse activation of the service. In the properties of the connection protocol, simply remove the marker from the "Use the following IP address" item, rearranging it in the "Obtain an IP address automatically" column. You can also remove one filtering mode and set another one, for which delete the prescribed numbers and drive in those that correspond to the desired Yandex.DNS mode.

On modern mobile devices, changing DNS settings is also available. Setting up Yandex.DNS on Android is easy:

• Let's move on to the Wi-fi settings (the menu of smartphones may differ slightly depending on the firmware version, but in general, the actions are similar for different OS variations);
• Are looking for active point access, press and hold;
• In the menu that appears, select the "Change network" function;
• We put a marker in front of the item "Advanced options", go down and select "DHCP", after which we activate the "Static" mode;
• We find "DNS 1" and enter the Yandex DNS (numbers of the filtering mode you have chosen);
• We save the result.

Disabling the Yandex DNS service is performed in the reverse way.

Setting up Yandex.DNS on a wireless Wi-fi adapter

Setting up the filtering service is also easy on the router. After the procedure, the specified filters will be distributed to all devices connected to this network. The settings may differ depending on the router model, but the principle of operation is the same:

• Open device settings;
• We go through authorization (enter login / password);
• Go to Network settings (Network - WAN);
• Check "Use These DNS Servers";
• Specify the preferred and alternative DNS and save the settings;
• We reboot the device.

Disabling Yandex.DNS on the router is just as easy. To do this, you need to uncheck the box “Use These DNS Servers” (“Use These DNS Servers”) and remove the entered Yandex addresses, if any servers were registered there before making changes, return those numbers to the fields, then save the parameters. Interestingly, Yandex also releases firmware for some router models, where all the necessary settings are already present.

Checking the work of Yandex.DNS

Perhaps, after completing the settings, you will want to make sure that the service is working and the device is really safe, and your child is under control. Checking if a service is running is very easy in practice. Just go, for example, to a site with a "strawberry" (if the Family mode is selected). Instead of the portal content, you will see a message from Yandex.DNS telling you about adult content and the prohibition of displaying pages with such content. The service is quite good and cases of hitting a resource that does not have any hint of villainy in the form of a virus or pornography are rare. The settings are simple and are performed without the involvement of third-party software. And most importantly, with the help of Yandex.DNS, you can protect your own, as well as your children's devices, from attacks by viruses + protect minors from information they do not need.